Beautiful antique solid 14K yellow gold necklace and locket in very good condition.  Light surface scratching to the gold from use.  I can find no gold marks, but the chain and locket both tested as solid 14K gold and are unconditionally guaranteed to be so.  The locket measures 7/8 inch across and opens and closes correctly.  The chain measures 19 1/4 inches in length and the barrel clasp functions correctly.  The back of the locket is engraved ME X Mas 1900.  Total weight is 9.6 grams.  The center diamond is a natural diamond and measures 2mm across.  Beautiful piece of antique jewelry.  Please feel free to ask any questions.